Flanging machine



March 2 19!;6.

J. HUBER FLANGING MACHINE Filed Sept. 6, 1923 3 Sheets-Sheet l VENTOR March 2 1926.

J. HUBER FLANGING MACHINE '5 Sheets-Sheet 2 Filed Sept. 6. 1923 INVENTOR March 2 1926. 1,575,487

J. HUBER FLANGING MACHINE Filed Sept. 6, 1923 3 Sheets$heet 5 INVENTOR Patented Mar. 2, 1926.

UNITED STATES JOHN HUBER, 01E CHICAGO, ILLINOIS.

FLANGING MACHINE! Application filed September 6, 1923. Serial 1%,661343.

1 aZZ co/1077i may] concern:

Be it known that 1 JOHN HUBER, a citizen of the United States, residing at Chicago, in the county of Cook and State of 11- 5 linois, have invented certain new and useful Improven'ients in Flangiug Muchinesmf which the "following is a specification.

hi) invention relates to the art of bending sheetor plate metal, and consists in an improvement in mechanism for forming a flanged or a flanged and dished disk.

It has in view to utilize the main frame v and actuating mechanism of a power operated shear, punch, press, or other, similar machine, by providingsuitable die mechanisin incorporated with the actuating plung or or head 01"? the machine, together with a suitable support for the plate or blank. Also, in combining with the main machine, and as a part of such supplemental equip u'ient, a reeiprocable pressing head or lever so mounted on the lower frame and connected with the plunger as to be operated thereby, adapted to act upon the edge portion of the plate by a series of pressing or bending shoes or dies, while at the same time, exerting a correcting counteracting or dishing press ire during the bending or Hanging operation.

The invention preferably utilizes a series of successively acting shoes or dies for the purpose of forming a flange or bend by a corresponding series of operations, rapidly and successively forming the flange through a series of such bending movements; also, a novel arrangement of supplemental pressing ineclmnism. I v

ln'the drawings, illustrating one applica tion of the invention.

Fi 3 to 8 inclusive are sectional views similar to Fug. 2, showing successive opera c tions utilizing the dies and fillers for the successive bending operations;

l 9 is a plan view of the pressing head, partly in section, on line IXTIX of Fig. 1; Fig. 10 is a transverse sectional view on the line X-X of Fig. 5, enlarged;

.lligure l is a partial view in sectional ele- Fig. 11 is a plan view, similar to Fig. 9,

the upper lifting mechanism removed;

Fig. 1-2 is a front edge view of the pressing head in elevated position;

Fig, 13 is a Similar view, showing the pressing head lowered;

Fig. 16% is an edge View of a POItion of a blank,- showing the action of the pressing head and flanging die on a flat plate or disk;

Fig. is, a sectional View through the finished article, showing the middle portion dished or crowned within the surrounding flange,

in the drawings, 2 is a main frame or housing of a standard punch, shear, or press, havin theusual anvil; block or'base' and head 4. lVithin the head l is usually mounted a cam or eccentric actuated plungor or base 5, to which may be attached the punch, shear, or die, commonly used in such machines, In the present case, I substitute for such element a special head 37 adapted.

to interfit and co-act with the reciprocating mechanism of the plunger 5 and head hfOI intermittent downward and upward move ment, as controlled by the usualclutch mechanism, as is well understood,

Secured upon the upper face of anvil 3 is an anvil block 6 having its inner face downwardly and rearwardlv inclined from the front, at a suitable angle, and with an inner face, suiiiciently deep to allow for the making of a flange of any desired depth,

whateverthe stroke of plun er 5 ma be.

A further important advantage in the inner inclined face is in providing ample and immediate clearance with respect to. the vertically acting'bcndinir dies a, 6, (Z and f on upward movement thereof, with freedom for annular adjustment of the blank and avoiding frictionv or interference of any kind.

- Said blank A, which is usually in the form of a circular plate or head, and which is to be peripherally flanged at substantially right angles, is preferably laid across the upper portion of the anvil ,6, as shown in 1, so that in the final pressing operatioi-is, the terminal flange wiil be bent down at substantially right angles to it whencfinished.

Anvil 6, for such purpose, is provided with a removable face block or bearing shoe 7, heldagainst the face of anvil (3 bv bolts V S, as w ll be readily understood. Shoe 7 1s preferably rounded at its bearing corner 9 so as to provide an easy rounded joint for the flange, and such shoe is either curved or straight as to its back face. If curved,

the radius may beapproximately that of the plate to be flanged, and the shoe is preferably made removable, so as to allow of the substitution of different shoes.

For the purpose of supporting piate A, I provide a frame 10 of structural shapes, properly braced, and having an inner supporting bracket 11 which. is pivotally mounted by a bolt 12 to the inner upper corner portion at each side of the anvil block 6. By such construction, the frame 10 may be raised or lowered, to adjust itto the desired position, and its outer end is supported by any suitable abutment 13 upon which the end of frame 10 rests.

A center supporting block 14,- is secured by bolts 15 at any desired position longitudinally of frame 10, upon which it may be moved in or out to locate the block 14 at the desired distance outwardly from the anvil block 6. Block 1 1 is provided with a central stud 16 and nut 17, upon which the plate A may be pivotally secured for in termittent rotation during the successive flanging operations.

The upper face of the base 3 is so shaped or adapted as to provide a flat bearing for a base plate 18 of a hinged bearing block 19, adapted to receive the hinge pin 20 of pressing head 21. Said head, as shown extends upwardly and outwardly over the anvil 6, having a middle pressing portion with an under flat face 22, either for initial pressing or for attachment against it of the supplemental pressing dies. Beyond its middle portion, the pressing head 21 is widened, as indicated at 23, forming an elongated pressing base for the lower resiliently mounted pressing block or platen 2 1. Said block is adapted to bear by. its upper flat face against the lower flat face 25 of pressing base 23 when in pressing position (Fig. 13) and to be extended away therefrom when inoperative (Fig. 12). For such purpose, springs 26, 26, extend through openings in laterally extending brackets 27 of pressing base 23 against similar extensions 28 of platen 2 1 at each end. The upper ends of springs 26 are adjustably resisted by bearing caps 29 held by bolts 30 to brackets 27, the tension of the spring being controlled by the nuts of the bolts.

Beyond the springs at each end, is a limiting bolt 31, tapped into extension 28, freely passing through a hole in bracket 27 and having a retaining nut by which the spring action on platen 2 1 may be regulated at each end, as shown. The platen 24 is concavely curved asv at 32, and extends considerably beyond the sides of anvil block 6, as shown. Such curvature is for the purpose of ap proximating the desired downward curv-v ing or bending of the plate at each side of the anvil face block simultaneously with the flanging operation, and of applying an initially increasing pressure by the spring resistance provided.

For the purpose of normally supporting the pressing head upwardly against the lower portion of the plunger 5, and to provide for sufiicient lost motion and cushioning where necessary, I utilize a bolt 33 extending upwardly from the widened portion 23 of the pressing head, through a slotted extension plate 3%, and provided with a terminal-head or nut 35. Between such terminal nut and its washer, and plate 34, is a cushioning spring 36 of sufficient resiliency to allow for upward lifting of the pressing head 011 upward movement of the plunger, without any jarring or sudden strains, while holding the plunger head 37 at all times in operative position against the lower terminal of the plunger. Such terminal 37 is preferably rounded, as shown, and bears against the upper fiat face of the pressing head in transmitting the downward acting power of the machine. Such working faces should, of course, be well lubricated at all times.

In the additional views, Figs. 38 inclusive, I show the pressing head 21 provided with successively acting dies, utilizing fillers for the purpose of settng downward the die which has been previously used directly against the under face of the pressing head. For such purpose, such head is conveniently slotted at each side, as at 38, for the reception of bolts 39 having slotted engagement with the first pressing die a, or with any of the successively used dies, as in Fig. 10.

Dies is comparatively thin and is intended to be used after the initial pressing action of face 22 of pressing head 21. Thereafter, a thicker die Z) is secured underneath the pressing head in the same manner, operating to press the flange to a greater degree, as in Fig. 4; and thereafter, die I) is utilized with a filler 0, as in Fig. 5, further lowering the position of the die and operating to further bend the flange. After such treatment, a still heavier die 03 is secured in position, as in Fig. 6, for further treatment, and the same die d is then used with an intermediate tiller 6 (same as 0), as in Fig. 7.; Thereafter, the final pressing die fis secured in position, as in Fig. 8, eifectingthe final fianging of the blank. The several dies are rounded at their front portions, as shown, for free bending action against the plate.

With each operation, the face 32 of block 24: on the outer portion of the pressing head is lowered into'contact with the upper face 7 raised position of the plunger, the plate A is intermittently shifted around a sufficient distance to bring the next section into position for operation, which operations will be successively repeated during one or more entire revolutions of the blank. The inter mittent partial rotation of the plate may be accomplished by any suitable mechanism or by an attendant, and the operation of the press itself may be controlled through the usual clutch mechanism, as is well understood.

The general construction of the mechanism and its manner of operation will be readily understood from the foregoing description. It is composed of comparatively few parts, and is well adapted to carry out the bending operations described in a rapid, economical, and successful manner. It is easily applied and adapted to the usual standard punch or similar machine, thereby obviating a great portion of the expense of building a special fianging machine, While the pressing head and its series of dies and fillers provide for the treatment of plates of a wide range of thickness. The depth of the flange is easily controlled by proper setting of the centering block 1a, the rear face of shoe 7 being sutiiciently long for the widest flange desired.

A special feature of advantage and utility is the resiliently mounted curved face platen 24 with its spring mounting connection withthe pressing base 23. In lowering of the pressing head 21 towards the anvil face block 7 and anvil 6, the outer portions of platen 24 first engage the plate oppositely beyond the middle anvil bearing location and bend it downwardly, as indicated in Fig. 13, so that when theintervening overlapping flange portion is bentat right angles to the line of such cross bearing engagement, upward warping or springing of the plate is prevented. As the flanging operation is continued around the plate, these counteracting forces tend to maintain the plate flat and straight, and correcting any undesired deformations.

A further advantage of the spring controlled curved bottom platen is in forming dished plates or heads, simultaneously with the flange formation, at a considerable saving of time and money. By allowing sufficient clearance movement of the plate at the center, as by lengthening bolt 16, or by loosening nut 17 sufliciently for the necessary clearance. continuous impacts of platen 24- may be utilized toform, a continuously arched dome to the plate, as in Fig. 13, its cur ature being easily controlled by the curvature of the platen, number of treats ments, etc, within the province of the op erator.

may be allowed for any excess metal neces- It will be understood, of course, that in such formation, ample PIOVlSlOlT treatments may be utilized, if desired, to brlng the plate into better condition, eliminating any warping or other imperfections, and that such operations may be maintained during the whole series of treatments, or

only some Of'tllGlXl, as desired.

The advantages of the invention will be readily understood and appreciated by all those familiar with this class of mechanism. It may be changed or varied by the skille mechanic in different details to adapt it to any desired conditions as to the material being acted'upon, the main machine with which it is used, or otherwise, but all such changes are to be considered as within the scope of the following claims.

What I claim is:

1. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block, and a pressing head connected with i the upper head and mounted on the support between the anvil block and reciprocable head, said pressing head having a bending face and a blank holding portion.

2. In flanging mechanism, the combina-'" tion with a supporting base and an upper reciprocable power driven head, of an anvil block, and a pressing head interposed between the anvil block and reciprocable head and operated thereby, said pressing head having a face adapted to exert bending force at one side of the anvil block and a blank holding portion adapted to exert pressure at each side of the bending location.

3. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block, and a pressing head interposed be tween the anvil block and reciprocable head and actuated entirely by said reciprocable head, said pressing head having a bending face and a blank holding portion adapted may be carried.

5. In fianging mechanism, the combination with a supporting base andan upper reciprocable power driven head, of an anvil block, and a pressing head movably carried on the supporting base and interposed between the anvil block and reciprocable head and having a bending face and resiliently mounted holding portions.

6. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block, a pressing head pivotally mounted on the supporting base and reciprocably connected with the power driven head and provided with a bending face, and a movable supporting frame for a circular blank having a pivoted center for maintaining'the edgeportion of the blank between the anvil block and the pressing head.

7. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block, a pressing head pivotally mounted on the supporting base and rcciprocably connected with the power driven head and pro vided with a bending face and blank holding portions, and a movable supporting frame for a circular blank having a pivotingcenter for maintaining the edge portion of the blank between the anvil block and the pressing head.

8. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block, and a vertically movable pressing head pivotally mounted on the supporting base and resiliently connected with the reciprocable power driven head and provided with a bending face and blank holding portions..

9. In fianging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block having a blank supporting and bending edge portion, a vertically movable blank supporting frame having a pivoting block, and a pressing head interposed between the anvil block and the reciprocable head con nected with the latter and having a bending face adapted tobend the blank over the edge portion of the anvil block.

10. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block having a blank supporting and bend ing edge portion, a blank supporting frame having a pivoting block, and a pressing head interposed between the anvil block and the reciprocable head connected with the latter and having a bending face adapted to bend the blank over the edge portion of the anvil block, and provided with simultaneously acting blank holding portions.

11. In flanging mechanism, the combination with a supporting base and an upper reciprocable power driven head, of an anvil block having a blank supporting and bending edge portion, a vertically movable blank supporting frame having a pivoting block, and a pressing head interposed between the anvil block and the reciprocable head connected with the latter and having a pressing die adapted to bend the blank over the edge portion of the anvil block.

12. In fianging mechanism, the coniibinationwith a supporting base and an upper reciprocable power driven head, of an anvil block, and a pressing head pivotally supported on the base and having a bolt and spring connection with the reciprocable head and provided with an inner lower pressing face, means for attaching a die thereto, a die removably carried on said lower pressing face, and outer blank holding means.

13. In fianging mechanism, the combination with asupporting base and an upper reciprocable power driven head, of an anvil block, and a pressing head pivotally supported on the base and having a bolt and spring connection with the reciprocable head and provided with an inner lower pressing face, means for attaching a die thereto, a die removably secured thereto by said attaching means, and a blank bending platen extending laterally at each side of the longitudinal center of the pressing head.

14-. A. pressing head for a flanging machine of the kind described having a pivotal bearing portion at one end, adjustably mounted blank holding portions at its opposite end, an intermediate bending face, and means for connecting the pressing head toa reciprocable power driven head.

15. A pressing head for a flanging machine of the kind described having a pivotal bearing portion at one end, adjustably mounted blank holding portions at its opposite end, an intermediate, bending face,

means for securing a bending die to said face, and means for operatively connecting the pressing head with a reciprocable pressing device.

16. The combination with a pressing head of the kind shown having a middle lower bending face and an outer widened portion; of a relatively movable pressing platen, and means for securing it resiliently to each edge portion of said widened portion.

17. The combination with a pressing head of the kind shown having a middle lower bending face and an outer reduced portion; of a reciprocable power driven head having a rounded bearing terminal for engaging the upper face of said widened portion and a bracket, and a bolt extending therethrough into the pressing head and having a cushion spring.

In testimony whereof I hereunto allix my signature.

JOHN HUBER. 

